LAB12 melto2 - Remote Controlled, Fully Adjustable Phono Preamplifier
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4.
Equalizer Curve
You can choose between 3 available de-emphasis curves: RIAA, Decca and Columbia to adjust the frequency
response of melto2 output.
Each record provides the emphasis curve that has been used while it was being produced, but you can try
alternative curves in any record without problem.
In a simple description:
Decca offers higher gain on high frequencies and lower in low frequencies compared with RIAA.
Columbia offers lower gain on high frequencies and higher in low frequencies compared with RIAA.
Input Impedance and Capacitance also affect the balance of the frequency response.
5.
Capacitance
For the MM cartridges, you can choose the desirable Input Capacitance. Try values near cartridge manufacturer
’s
recommended value to ‘’flatten’’ the response and avoid resonant peaks in higher
frequencies. However, the
capacitance values are affected from the
cartridge’s
design philosophy, as well as from the connecting cables, so
there is no absolutely correct setting. Therefore, experimentation is recommended until you find a setting that
suits your set-up and personal preference.
For the MC Cartridges, the setting is locked to the lower value.
